A) 23 B) 50 C) 60 D) 51
A) 1 B) 17 C) 3 D) 7
A) 5 B) 45 C) 9 D) 103
A) 33 B) 4 C) 3 D) 15
A) Halogens B) Noble Gases C) Alkali Metals D) Alkaline Earth Metals E) Transition Metals
A) 14 B) 14.007 C) 2 D) 7
A) 56 B) 137 C) 2 D) 6
A) 2 B) 6 C) 7 D) 1
A) Tellurium is a solid metalloid. B) Mercury is a solid metal. C) Chlorine is a liquid non-metal. D) Phosphorus is a non-metal gas.
A) 96 B) 5 C) 6 D) 42
A) 2 B) 3 C) 7 D) 4
A) proton/-, electron/+, neutron/no charge B) proton/+, neutron/-, electron/no charge C) proton/+, electron/-, neutron/uncharged D) proton/+, electron/neutral, neutron/-
A) neutrons and electrons B) protons and orbits C) protons and neutrons D) protons and electrons
A) Mercury and Thallium B) Carbon and Boron C) Phosphorus and Silicon D) Argon and Krypton
A) electrons orbit totally randomly around the nucleus B) the atom is a positively charged sphere with electrons embedded in it C) the atom is mostly empty space D) atoms are tiny solid spheres
A) region B) group C) nucleus D) period
A) Lithium B) Chlorine C) Magnesium D) Beryllium
A) group number B) number of neutrons C) period number D) number of protons
A) the same as the number of energy levels B) greater than the mass number C) the mass number minus the atomic number D) the same as the number of electrons
A) State of Matter B) Number of Neutrons C) Period Number D) Group Number
A) Manganese B) Carbon C) Francium D) Nitrogen
A) Yes, some Carbon atoms have 6 protons, some have 7 protons. B) No, every single Carbon atom has exactly 6 protons. An atom's atomic number gives it its identity.
A) by adding electrons B) by adding protons C) by losing protons D) By adding or losing electrons
A) by adding protons B) by losing protons C) by losing electrons D) by adding electrons
A) by losing electrons B) by losing protons C) by adding protons D) by adding electrons
A) by adding protons B) by adding or losing neutrons C) by adding neutrons D) by adding electrons
A) difference between the atomic and mass number B) same as the mass number C) same as the atomic number D) mass number divided by 2
A) the same as the atomic number B) the same as the mass number C) the same as the number of neutrons D) the difference between the mass and atomic number
A) Na and Li B) B and O C) Hg and C D) Mg and F
A) Li and Po B) Ba and Ra C) Mg and Cl D) F and At
A) The noble gases B) The transition metals C) The alkali metals D) The alkali earth metals E) The halogens
A) The noble gases B) The transition metals C) The halogens D) The alkali metals
A) 18 B) 4 C) 8 D) 17 E) 1
A) how many electron levels there are B) how many protons there are C) how reactive they are D) how many electrons there are
A) the number of neutrons B) how many valence electrons the atom has C) the number of protons D) how many electrons the atom has
A) Mercury B) Silver C) Fluorine D) Sodium E) Iron
A) Al B) H C) Li D) Au E) F
A) Li B) Mg C) Cs D) Al E) I
A) the number of protons B) the number of electrons C) the number of neutrons
A) Lewis B) Mendeleev C) Newton D) Bohr E) Dalton |